Polyfunctional fused heterocyclic compounds via indene-1,3-diones

• Published in: Heteroatom chemistry Vol. 14; no. 6; pp. 491 - 497
• Main Authors: Hassaneen, Hamdi M., Abdallah, Tayseer A., Abdelhadi, Hyam A., Hassaneen, Huwaida M. E., Pagni, Richard M.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 2003

2‐Dimethylaminomethylene‐ and 2‐ethoxymethylene‐1,3‐indendione 1a,b react with 6‐amino‐2‐thioxopyrimidin‐4(3H)‐one 2 in boiling acetic acid to give 2‐thioxo‐1,3‐dihydroindeno[3,2‐d]pyrimidino[4,5‐b]pyridine‐4,9‐dione (4). The latter compound reacts with hydrazonoyl chlorides 5a–c to afford products...